Apple today sent out media invites for its annual iPhone-centric event that will be held on Wednesday, September 12 at 10:00 a.m. at the Steve Jobs Theater on the Apple Park Campus in Cupertino, California.

The media invites released today give a first look at the theme of the event and feature the tagline "Gather Round," likely referencing the main ring-shaped building at Apple Park.

There are a lot of product refreshes that we could see at the fall 2018 event. First and foremost, Apple is expected to be introducing three iPhones this year: a second-generation 5.8-inch OLED device, a larger-screened 6.5-inch OLED device, and a lower-cost 6.1-inch smartphone with an LCD display.

All three iPhones are expected to feature upgraded A12 processors, faster LTE, edge-to-edge displays, and Face ID integration, with Apple doing away with the Home button for its entire 2018 iPhone lineup.

Apple's low-cost iPhone, which could be priced around $700, is expected to use an aluminum frame and a single-lens camera, keeping costs low. The two OLED iPhones, which could cost somewhere between $800 and $1,000, will use stainless steel frames with dual-lens cameras.

Along with fresh iPhones, Apple is expected to introduce the Apple Watch Series 4, which is said to feature a larger display likely implemented through a reduction in bezel size. Longer battery life and improved health monitoring capabilities are also rumored, but beyond that, we don't know much about the new wrist-worn devices.

A mockup of what the Apple Watch Series 4 might look like

New iPad Pro models with Face ID, slimmer bezels, and no Home button are in the works, as are refreshed Macs that include a low-cost MacBook and a new Mac mini, but it is not clear if these products will come at the September event.

Apple may use a second October event to unveil new iPads and Macs as it has done in past years where Macs and iPads were introduced in the fall.

2018 iPad Pro mockup via Benjamin Geskin

New Apple Watch bands, revamped AirPods with "Hey Siri" support, and the long-awaited AirPower charging mat, which is designed to charge the Apple Watch, iPhone, and AirPods at the same time, will all likely be introduced in September.

Apple's 2018 iPhone keynote event will begin at 10:00 a.m. Pacific Time. Apple typically streams the event live on its website and on Apple TV, but for those who are unable to watch, MacRumors will be providing full event coverage both on MacRumors.com and through our MacRumorsLive Twitter account.